Improvement in bearings for railway-car axles



E.DMURFEYBIEARING for AXLES eic.

. PATENTED WITNESSES. 91 ha UNITED STATES PATENT OFFICE.

ELIZA DEXTER MURFEY, OF .\'E\\ YORK, N. Y., ASSIGNOR- TO THE MANHATTAN PACKING MAN UFAUTURIXG COMPANY, OF SAME PLACE.

IMPROVEMENT IN BEARINGS FOR RAILWAY-CAR AXLES.

Specification forming part of Letters Patent No. 116,475, dated J one 27, 1871.

To all whom it may concern:

Be it known that I, ELIZA DEXTER. Mnarav, of New York, county of New York, State of New York, have invented an Improved Bearing for Axles, &c., of which the following is a specification My invention consists of an improvement in bearings for axles, shafts, &c., the character of which istoo fully described hereafter to need preliminary explanation.

Figure 1 is a sectional view of an axle-box with my improvement, showing part of a car-axle. Fig. 2 is a perspective view of part of the box; Fig. 3, a longitudinal section on the line 1 2, Fig.

'2; and Fig. 4, a modification.

A is the casing of the box, which is recessed at the rear to admit the journal .v of an axle, B, the front end of the casing being provided with the usual cap 0. Between the shoulders y y, at

the top of the box, tits a detachable block, D,

which ma be of vulcanized rubber or other material, an the form of which is similar to that of the ordinary brass bearings; and between the curved lower side of this block and the journal a: is interposed a sheet or lining of non-metallic absorbent material, I, which is impregnated with plumbago, ivory-dust, or equivalent substance or substances, and forms the bearing of the journal. The said bearing may consist of the impregnated felt described in my application allowed the 30th day of September, 1870; or it may be of cloth, leather, paper, 8.70., coated with a suitable composition; or it may be of any similar material. I prefer, however, to use impregnated strands, connected to form a sheet or mat, as described in my patent for hearing material dated November 15, 1870. The bearing is folded over one or both ends of the block 1) sons to form bearings for the shoulders t t of the journal; and cords a a are passed tlu'onghlongitudinal recesses b in the block, and are connected to the bearings so as to secure the latter to the block, as shown in Figs. 2 and 3. Through the top ot' the box extend tubes J J, tapered internnlly, and corresponding with openings in the block D, forming tapering chambers c c; and on the end of each tube screws a cap, a, between which and a loose disk, f, in the tube is interposed a spring, i. The mat beneath the chambers c is more open than at other points, this beiug etiected by pcrtbrating the mat at the said parts or in any other suitable manner. A longitudinal recess or slot, m, in the lower face of the box, communicates with each opening 0. A detachable thrust-plate, F, near the front end of the box, has on its inner side a rounded projection, a, and through openings 10 in the said plate are passed impregnated strands or cords a, which, covering the face of the rounded projection, form a bearing for the end of the axle. The chambers c are tilled with a suitable lubricant in a powdered or semi-fluid or pasty condition, and the disks f, springs i, and caps c are secured in their places, as shown in Fig. 1, so that a continual pressnie will be exerted to force the lubricant out of the chamber 0 and through the recess in onto the hearing I, which absorbs the said lubricant in proportion as the material-with which it is impregnated is dissipated. When the hearing becomes worn the block D, which forms a holder for the hearing, may be removed in the same manner as the usual bearing, and the lining may be detached from the block after severing the cords a, a new lining being substituted for that removed. The strands I are etfectually secured to the thrust-plate F by passing them through the openings 10, but may be readilyremoved and replaced, the plate being withdrawn for this purpose-through the top of the box. A sheet, 1', of rubber or other elastic material, is placed at the back of the holder D to deaden the shocks imparted by the movements of the axle. A holder, D, overlapping the enlargements o v of the axle near the shoulders t t, as shown in Fig. 4,n|ay be employed, the bearing being com tinned over the entire lower surface of the holder. Where the bearing is employed in loose pulleys it may be seemed to blocks D fitting in and detachable from the hub, or may be titted directly to the opening of the latter.

I claim-- 1. The combination of a case or hub, A, the

holder D fitting in the case and adapted to the 3. The detachable thmst-plaie F carrying imjonrnnl r, and a lining; l, n! the material depregnated hearing material a, as specified. scribed, carried by the ilfllihl', as set furth. ln testimony whereof I have signed my uanio 2. The said lining l SNHlHi to a hulder, l),by in this specification in the presence of two subcnrd a, w as to he detachable from the holder, scribing witnesses.

v as described. ELIZA D. MURFEY;

3. The combination of the-lining and chambers 4;, as specified. a Witnesses;

4. The springs i and disks f, in combination THOMAS PRUDEN, with the chambers c, for the purpose specified. HENRY MCMANUS. 

